Herbert Fleischmann, Ulli Philipp, Fritjof Vierock, Joachim Wichmann, Marlies Schönau, Lisa Helwig, Gert Baltus
{"copyright_id":"0x8372f52e56027b52835b287a7ea12aa8f746c2e464171f9486319a24ca791be9","name":"Herbert Fleischmann, Ulli Philipp, Fritjof Vierock, Joachim Wichmann, Marlies Schönau, Lisa Helwig, Gert Baltus","registered_at":"2026-06-17T12:08:25Z","symbol":"NIM1390800","token_address":"0xc4e380a1b4ae56b35478cf610491ba06283c2570","type":"artist","uuid":"85e266a6-ed14-460d-a634-93b7e4a00afc"}
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8372f52e56027b52835b287a7ea12aa8f746c2e464171f9486319a24ca791be9. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/85e266a6-ed14-460d-a634-93b7e4a00afc.json and https://artists.proofprofile.net/proofs/artist/85e266a6-ed14-460d-a634-93b7e4a00afc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).